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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2007,Vol.23>> Issue(04)>> 601-604     doi: 10.3866/PKU.WHXB20070429         中文摘要
Preparation of Cu/Sr3Ti2O7 and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution
FANG Shu-Mei; OU Yan; LIN Jing-Dong; LIAO Dai-Wei
Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
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Sr3Ti2O7 photocatalyst with perovskite-layered structure was synthesized by polymerized complex method (PCM). Cu ion as an effective dopant was loaded onto Sr3Ti2O7 catalyst. Cu/Sr3Ti2O7 catalyst was applied in the mixture of water and methanol, methanol was used as a sacrificial agent under ultra-violet irradiation, and the catalyst was characterized by XPS, XRD, and UV-Vis DRS. The results showed that Cu existed in several kinds of valence and the photocatalytic activity of Cu/Sr3Ti2O7 was superior to that of pure Sr3Ti2O7. Cu+ and adsorbed oxygen can accelerate the interfacial electron transfer. When the amount of Cu was 1.5%(w), the best catalytic effect was obtained and the stable average hydrogen evolution rate was about 550-600 μmol·h-1. The Cu/Sr3Ti2O7 after reduction attained the highest hydrogen evolution rate that was close to 1140.8 μmol·h-1.

Keywords: Perovskite   Water splitting   Hydrogen   Photocatalysts   Sr3Ti2O7  
Received: 2006-10-10 Accepted: 2006-11-21 Publication Date (Web): 2007-03-09
Corresponding Authors: LIAO Dai-Wei Email: dwliao@xmu.edu.cn


Cite this article: FANG Shu-Mei; OU Yan; LIN Jing-Dong; LIAO Dai-Wei. Preparation of Cu/Sr3Ti2O7 and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution[J]. Acta Phys. -Chim. Sin., 2007,23 (04): 601-604.    doi: 10.3866/PKU.WHXB20070429
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